One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,7)(4,8)(5,6)(10,12)(14,15)(17,18,22,25)(19,20,23,26)(21,24,30,29)(27,28,31,32)(1,2,5,6)(3,7,8,4)(9,10,13,12)(11,15,16,14)(17,19)(18,20)(21,27)(22,23)(24,28)(25,26)(29,32)(30,31)(1,3)(2,4)(5,8)(6,7)(9,11,13,16)(10,14,12,15)(17,18,22,25)(19,26,23,20)(21,29,30,24)(27,28,31,32)(1,4)(2,3)(5,7)(6,8)(9,12,13,10)(11,15,16,14)(17,18)(19,20)(21,24)(22,25)(23,26)(27,28)(29,30)(31,32)(1,2)(3,4)(5,6)(7,8)(17,20)(18,23)(19,25)(21,28)(22,26)(24,31)(27,29)(30,32) involution — undirected(1,4)(2,3)(5,7)(6,8)(17,21,22,30)(18,24,25,29)(19,27,23,31)(20,28,26,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.